This equipment should not be installed, operated or
maintained by any person who has not read and understood
all the contents of this manual. Failure to read and comply
with the contents of this manual can result in serious bodily
injury or death, and/or property damage.
LEVER
OPERATED
CHAIN HOIST
LB SERIES
MODEL L5
3/4 Ton through 9 Ton Capacity
Page 2
Table of Contents
Section Page Number
1.0 Important Information and Warnings ……………………………………………………………………… 4
9.0 Parts List …………………………………………………………………………………………………… 53
3
Page 4
These general instructions deal with the normal installation, operation, and maintenance situations encountered with
the equipment described herein. The instructions should not be interpreted to anticipate every possible contingency
or to anticipate the final system, crane, or configuration that uses this equipment. For systems using the equipment
covered by this manual, the supplier and owner of the system are responsible for the system‟s compliance with all
applicable industry standards, and with all applicable federal, state and local regulations/codes.
This manual includes instructions and parts information for a variety of hoist types. Therefore, all instructions and
parts information may not apply to any one type or size of specific hoist. Disregard those portions of the instructions
that do not apply.
Record your hoist‟s Code, Lot and Serial Number (see Section 9) on the front cover of this manual for identification
and future reference to avoid referring to the wrong manual for information or instructions on installation, operation,
inspection, maintenance, or parts.
Use only Harrington authorized replacement parts in the service and maintenance of this hoist.
1.0 Important Information and Warnings
1.1 Terms and Summary
This manual provides important information for personnel involved with the installation, operation and
maintenance of this product. Although you may be familiar with this or similar equipment, it is strongly
recommended that you read this manual before installing, operating or maintaining the product.
Danger, Warning, Caution and Notice
Throughout this manual there are steps and procedures that can present hazardous situations. The following
signal words are used to identify the degree or level of hazard seriousness.
Danger indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury, and property damage.
Warning indicates an imminently hazardous situation which, if not avoided, could result in
death or serious injury, and property damage.
Caution indicates a potentially hazardous situation which, if not avoided, may result minor
or moderate injury or property damage.
Notice is used to notify people of installation, operation, or maintenance information which
is important but not directly hazard-related.
4
Page 5
Equipment described herein is not designed for and MUST NOT be used for lifting, supporting, or transporting
people, or for lifting or supporting loads over people.
Equipment described herein should not be used in conjunction with other equipment unless necessary and/or
required safety devices applicable to the system, crane, or application are installed by the system designer, system
manufacturer, crane manufacturer, installer, or user.
Modifications to upgrade, rerate, or otherwise alter this equipment shall be authorized only by the original equipment
manufacturer.
If a below-the-hook lifting device or sling is used with a hoist, refer to ANSI/ASME B30.9, “Safety Standard for Slings” or ANSI/ASME B30.20, “Safety Standard for Below-the-Hook Lifting Devices”.
Hoists used to handle hot molten material may require additional equipment or devices. Refer to ANSI Z241.2,
“Safety Requirements for Melting and Pouring of Metals in the Metalcasting Industry”.
Failure to read and comply with any one of the limitations noted herein can result in serious bodily injury or death,
and/or property damage.
It is the responsibility of the owner/user to install, inspect, test, maintain, and operate a hoist in accordance with
ANSI/ASME B30.21, “Manually Lever Operated Hoists” and OSHA Regulations. If the hoist is installed as part of a
total lifting system, such as an overhead crane or monorail, it is also the responsibility of the owner/user to comply
with the applicable ANSI/ASME B30 volume that addresses that type of equipment.
It is the responsibility of the owner/user to have all personnel that will install, inspect, test, maintain, and operate a
hoist read the contents of this manual and applicable portions of ANSI/ASME B30.21, “Manually Lever Operated Hoists” and OSHA Regulations.
If the hoist owner/user requires additional information, or if any information in the manual is not clear, contact
Harrington or the distributor of the hoist. Do not install, inspect, test, maintain, or operate this hoist unless this
information is fully understood.
A regular schedule of inspection of the hoist in accordance with the requirements of ANSI/ASME B30.21 should be
established and records maintained.
5
Page 6
1.2 Warning Tags and Labels
Front Back
Figure 1-1 Warning Tag Attached to Hoist (shown larger for legibility)
The warning tag illustrated below in Figure 1-1 is supplied with each hoist shipped from the factory. If the tag is
not attached to your hoist‟s no-load side of the load chain, order a tag from your dealer and install it. Read and
obey all warnings attached to this hoist. Tag is not shown actual size.
6
Page 7
2.0 Technical Information
Temperature range:
-40° to +140°F (-40° to +60°C)
Humidity:
100% or less (Not an Underwater Device)
Table 2-1 Hoist Specifications
Cap.
(Tons)
Product
Code
Std.
Lift
(ft)
Pull to
Lift
Load*
(lbs)
Load Chain
Diameter
(mm) x
Chain Fall
Lines
Net
Weight
(lbs)
Shipping
Weight
Approx.
(lbs)
Weight for
Additional
One Foot
of Lift (lbs)
¾
LB008
5
54 (36)
5.6 x 1
13
13
0.5
1
LB010
72 (46)
14
1½
LB015
64 (45)
7.1 x 1
18
18
0.7
2
LB020
59 (42)
8.8 x 1
25
26
1.1
2¾
LB028
81 (57)
3
LB030
69
10.0 x 1
33
35
1.5
6
LB060
72
10.0 x 2
57
60
3.2
9
LB090
78
10.0 x 3
88
93
4.7
2.1 Specifications
2.1.1 Product Code
2.1.2 Operating Conditions and Environment
*Numbers in parentheses are for hoists with the optional load limit warning handle.
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Page 8
2.2 Dimensions
Table 2-2 Hoist Dimensions
Cap.
(Tons)
Product
Code
a
(in) b (in)
Headroom
C
(in)
D*
(in) e (in) f (in) g (in)
¾
LB008
5.7
4.7
11.0
9.6
(14.4)
3.8
1.6
0.9 1 LB010
11.8
1.1
1½
LB015
6.3
5.0
13.2
10.4
(14.4)
3.9
1.5
1.3 2 LB020
6.8
5.9
14.8
4.0
1.8
1.4
2¾
LB028
3
LB030
7.5
6.3
15.6
16.3
(16.9)
4.4
1.5 6 LB060
8.5
21.3
2.3
2.0
9
LB090
12.0
26.8
4.1
2.9
LB015
LB030
LB060
LB090
Figure 2-1 Hoist Dimensions (Refer Table 2-2)
*Dimensions in parentheses are for hoists with the optional load limit warning handle.
8
Page 9
Table 2-3 Hook Dimension*
T = Top Hook
B = Bottom Hook
Units = inch
Cap.
(Tons)
Product
Code
Hook a b c d e g
¾
LB008
T & B
0.9
0.6
0.8
0.6
1.4
0.93
1
LB010
T & B
1.7
1.14
1½
LB015
T & B
1.2
0.7
1.0
0.7
1.7
1.26
2
LB020
T & B
1.4
0.8
1.14
0.8
1.9
1.44
2¾
LB028
3
LB030
T & B
1.6
1.0
1.2
1.0
2.0
1.54
6
LB060
T & B
2.1
1.3
1.6
1.3
2.4
1.97
9
LB090
T & B
2.6
1.6
2.0
1.6
3.4
2.85
*Refer to Section 5.7 for inspection dimensions and limits.
2.3 Optional Equipment
2.3.1 Load Limit Warning Handle (LLWH)
2.3.2 Shipyard Hooks (SYH)
The SYH is a special hook with a heavier design for use in the metal and ship building industries.
They are designed to aid in the effective positioning of fixtures and steel plate before welding.
Hook latches are included with all SYH. Refer to Figure 2-2.
or serious injury. To avoid these hazards:
- Follow the hoist operating instructions in Section 4.0.
- Read and understand all instructions before using.
- Follow instructions on all related warning tags.
- Make sure the Shipyard Hook is secure so it can not unintentionally disengage from load.
The SYH is available in Top and Bottom versions and in two sizes: 1½ and 3 Tons.
A yoke is included with the SYH. See Section 9.3, Parts List for a complete SYH part listing.
Refer to Section 4.4 for detailed LLWH information.
Shipyard Hook is designed for tip loading. Improper use could result in death
9
Page 10
Figure 2-2 Shipyard Hooks
Figure 2-3 Top Hook Extender
2.3.3 Top Hook Extender
The Top Hook Extender is designed to move the hoist body away from the attachment point. It
can be used to place the hoist lower in vertical application or increase the hoist reach in horizontal
applications. Refer to Figure 2-3.
The Top Hook Extender Parts Kit contains a hook set, chain, top and bottom yokes, extension
block and all necessary hardware. Kits are available for LB008 through LB030 hoists.
The standard extender chain length is 18 inches; other lengths are available up on request.
The extender chain is the same size and grade Harrington chain as is used on the hoist.
Top Hook Extender can be acquired upon request with Latch Lock, Inspection or Ship Yard type
hooks.
See Section 9.3, Parts List for a complete Top Hook Extender part listing.
2.3.4 Latch Lock Hooks
The Bullard hook has a conventional hook shape with a special, heavy-duty, rotating, spring-
loaded, locking latch. The latch remains locked until it is released by the operator.
The Shur-Loc hook is a special design hook where the latch remains fixed and the hook swings
to unlock. The hook cannot be opened while a load is applied.
Installation of these hooks may change the headroom.
See Section 9.3, Parts List for a complete Latch Lock Hook part listing.
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Page 11
Figure 2-4 Latch Lock Hooks
Figure 2-5 Inspection Hooks
2.3.5 Inspection Hooks
The Inspection Hook is designed to facilitate the inspection of the internal surfaces of the hook
yoke and shank portion of the hook itself. The Inspection Hook is suitable for applications where
inspection of the internal parts of the hook set is required. The inspection hook uses the standard
Harrington hook set and is assembled with high-strength locking fasteners instead of rivets.
Inspection hooks are available in top and bottom versions. Refer to Figure 2-5.
Disassembly and re-assembly involves removal and reinstallation of the yoke fasteners of the
Inspection Hook Set Assembly followed by testing of the hoist prior to returning it to service.
The Inspection Hook is available for LB008 through LB030 hoists.
See Section 9.3, Parts List for a complete Inspection Hook part listing.
2.3.6 Slip Clutch
Refer to Section 4.5 for detailed Slip Clutch information.
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3.0 Preoperational Procedures
Figure 3-1 Twist in Load Chain – 6 Ton Double Fall Model
Figure 3-2 Capsized Hook and Chain – 6 Ton Double Fall Model
3.1 Chain
3.1.1
3.1.2
A chain stopper link must be installed on the second to last chain link on the no-
load end of the load chain.
Verify that the load chain is not twisted or tangled prior to operating the hoist.
Make sure the bottom hook on the 6 (LB060) and 9 (LB090) Ton multiple fall hoists is not capsized.
See Figures 3-1 and 3-2. Correct all chain irregularities before conducting the first hoist operation.
3.1.3
Model L4 and Model L5 chain is not interchangeable.
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3.2 Attachment Points
3.2.1
components and supporting structure are adequate to support the hoist and its load. If necessary
consult a professional that is qualified to evaluate the adequacy of the suspension location and its
supporting structure.
3.2.2
Prior to attaching the hoist ensure that all attachment points, suspension
See Section 6.6 for outdoor installation considerations.
3.3 Mounting the Hoist
3.3.1 Hook Mounted to a Fixed Location - Attach the hoist‟s top hook to the fixed suspension point.
3.3.2
that the hook‟s latch is engaged.
Ensure that the fixed suspension point rests on the center of the hook‟s saddle and
3.4 Preoperational Checks and Trial Operation
3.4.1
other lifting attachments before use. Inspect all load suspension members for damage prior to use and
replace or repair all damaged parts.
3.4.2
Section 3.1.
3.4.3 Measure and record the “k” dimension of all hooks on hoist. See Table 5-10 under Section 5,
“Inspection”.
3.4.4 Record the hoist's Code, Lot and Serial Number (from the name plate on the hoist; see Section 9) in
the space provided on the cover of this manual.
Confirm the adequacy of the rated capacity for all slings, chains, wire ropes and all
Verify and correct all chain irregularities prior to operating the hoist. Refer to
3.4.5 Ensure that the hoist is properly installed to a fixed point.
3.4.6 Ensure that all nuts, bolts and split pins (cotter pins) are sufficiently fastened.
3.4.7 Confirm proper operation.
Before operating read and become familiar with Section 4 - Operation.
Before operating ensure that the hoist meets the Inspection, Testing and Maintenance
requirements of ANSI/ASME B30.21.
Before operating ensure that nothing will interfere with the full range of the hoist‟s operation.
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Page 14
4.0 Operation
DO NOT WALK UNDER A SUSPENDED LOAD
HOIST OPERATORS SHALL BE REQUIRED TO READ THE OPERATION SECTION OF THIS MANUAL, THE
WARNINGS CONTAINED IN THIS MANUAL, INSTRUCTION AND WARNING LABELS ON THE HOIST OR
LIFTING SYSTEM, AND THE OPERATION SECTIONS OF ANSI/ASME B30.21 and ANSI/ASME B30.10. THE
OPERATOR SHALL ALSO BE REQUIRED TO BE FAMILIAR WITH THE HOIST AND HOIST CONTROLS
BEFORE BEING AUTHORIZED TO OPERATE THE HOIST OR LIFTING SYSTEM.
HOIST OPERATORS SHOULD BE TRAINED IN PROPER RIGGING PROCEDURES FOR THE ATTACHMENT
OF LOADS TO THE HOIST HOOK.
HOIST OPERATORS SHOULD BE TRAINED TO BE AWARE OF POTENTIAL MALFUNCTIONS OF THE
EQUIPMENT THAT REQUIRE ADJUSTMENT OR REPAIR, AND TO BE INSTRUCTED TO STOP OPERATION
IF SUCH MALFUNCTIONS OCCUR, AND TO IMMEDIATELY ADVISE THEIR SUPERVISOR SO CORRECTIVE
ACTION CAN BE TAKEN.
HOIST OPERATORS SHOULD HAVE NORMAL DEPTH PERCEPTION, FIELD OF VISION, REACTION TIME,
MANUAL DEXTERITY, AND COORDINATION.
HOIST OPERATORS SHOULD NOT HAVE A HISTORY OF OR BE PRONE TO SEIZURES, LOSS OF
PHYSICAL CONTROL, PHYSICAL DEFECTS, OR EMOTIONAL INSTABILITY THAT COULD RESULT IN
ACTIONS OF THE OPERATOR BEING A HAZARD TO THE OPERATOR OR TO OTHERS.
HOIST OPERATORS SHOULD NOT OPERATE A HOIST OR LIFTING SYSTEM WHEN UNDER THE
INFLUENCE OF ALCOHOL, DRUGS, OR MEDICATION.
• Read ANSI/ASME B30.21 and ANSI/ASME B30.10.
• Read the hoist manufacturer‟s Operating and Maintenance Instructions.
• Read all labels attached to equipment.
4.1 Introduction
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Page 15
The operation of a hoist involves more than activating the hoist‟s controls. Per the ANSI/ASME B30 standards, the use
Improper operation of a hoist can create a potentially hazardous
situation which, if not avoided, could result in death or serious injury,
and substantial property damage. To avoid such a potentially
hazardous situation THE OPERATOR SHALL:
of a hoist is subject to certain hazards that cannot be mitigated by engineered features, but only by the exercise of
intelligence, care, common sense, and experience in anticipating the effects and results of activating the hoist‟s controls.
Use this guidance in conjunction with other warnings, cautions, and notices in this manual to govern the operation and
use of your hoist.
4.2 Shall’s and Shall Not’s for Operation
• NOT lift more than rated load for the hoist.
• NOT use damaged hoist or hoist that is not working
properly.
•NOT use hoist with twisted, kinked, damaged, or
worn chain.
•NOT use hoist if the bottom hook is capsized
(multiple fall hoists - see Section 3.1).
•NOT leave load supported by the hoist unattended
unless specific precautions have been taken.
•NOT allow the chain, or hook to be used as an
electrical or welding ground.
•NOT allow the chain, or hook to be touched by a
live welding electrode.
• NOT remove or obscure the warnings on the hoist.
• NOT use the hoist to lift, support, or transport
people.
• NOT lift loads over people.
• NOT apply load unless load chain is properly
seated in the load sheave (and idle sheave for hoist
with multiple chain falls).
•NOT use the hoist in such a way that could result in
shock or impact loads being applied to the hoist.
•NOT attempt to lengthen the load chain or repair
damaged load chain.
•NOT operate hoist when it is restricted from forming
a straight line from hook to hook in the direction of
loading.
•NOT use load chain as a sling or wrap load chain
around load.
• NOT use hoist with extension on lever handle.
• NOT apply load if binding prevents equal loading
on all load-supporting chains.
•NOT operate beyond the limits of the load chain
travel.
•NOT support load on hook tip unless hook is
designed for tip loading.
•NOT operate a hoist on which the safety placards
or decals are missing or illegible.
•Be familiar with operating controls, procedures, and
warnings.
•Make sure the unit is securely attached to a
suitable support before applying load.
•Make sure load slings or other approved single
attachments are properly sized, rigged, and seated
in the hook saddle.
•Take up slack carefully - make sure load is
balanced and load-holding action is secure before
continuing.
•Make sure all persons stay clear of the supported
load.
•Protect the hoist‟s load chain from weld splatter or
other damaging contaminants.
•Report Malfunctions or unusual performances
(including unusual noises) of the hoist and remove
the hoist from service until the malfunction or
unusual performance is resolved.
• Warn personnel before lifting or moving a load.
• Warn personnel of an approaching load.
• NOT use in a way that causes either hook to be
side-loaded.
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Page 16
Improper operation of a hoist can create a potentially hazardous
situation which, if not avoided, could result in minor or moderate
injury, or property damage. To avoid such a potentially hazardous
situation THE OPERATOR SHALL:
•Maintain a firm footing or be otherwise secured
when operating the hoist.
•Check brake function by tensioning the hoist prior
to each lift operation.
•Use hook latches. Latches are to retain slings,
chains, etc. under slack conditions only.
•Make sure the hook latches are closed and not
supporting any parts of the load.
•Make sure the load is free to move and will clear all
obstructions.
• Avoid swinging the load or hook.
• Make sure hook travel is in the same direction as
shown on controls.
•Inspect the hoist regularly, replace damaged or
worn parts, and keep appropriate records of
maintenance.
•Use the hoist manufacturer‟s recommended parts
when repairing the unit.
•Lubricate load chain per hoist manufacturer‟s
recommendations.
•NOT use the hoist load limiting or warning device to
measure load.
•NOT allow your attention to be diverted from
operating the hoist.
•NOT allow the hoist to be subjected to sharp
contact with other hoists, structures, or objects
through misuse.
•NOT adjust or repair the hoist unless qualified to
perform such adjustments or repairs.
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Figure 4-1 Free Chain Mode
4.3 Hoist Operation
4.3.1 Free Chain Principle
Free chaining allows the load chain to be moved freely because the brake is released under no
load situations.
Pulling the free knob actuates the internal spring to release the mechanical brake allowing the load
chain to be pulled in either direction to the desired length. Refer to Figure 4-1.
The brake is engaged during lowering or lifting the load.
4.3.2 Free Chain Operation
1)
2)
3)
4) Set the Selector to the “N” position. The Selector is located under the Free Knob on the hand
lever.
5) Pull the Free Knob out. The Free Knob turns counterclockwise and “snaps” out.
6) Pull the load chain to move the hook to the desired position.
7)
set the brake and not allow the load chain to move. If this occurs the hoist must be reset.
8) To reset the hoist to operate, rotate the Free Knob clockwise while pulling lightly on the load side
chain. Once slack is removed, the Free Knob “snaps” in. This resets the brake and allows the
hoist to be operated with the hand lever.
Do not operate the hoist Free Knob while a load is applied to the hoist.
Do not touch the hoist Free Knob during lifting or lowering of the load.
Always check that the selector is placed in the proper position.
Do not pull the load chain suddenly in free chain mode. Excessive pulling may
17
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Table 4-1 Hoist Lever Operation
Selector Position
Lever Rotation
Load Movement
UP
Clockwise
Lift
DN
Counterclockwise
Lower
Table 4-2 Signal Warnings
Signal Color
Load Status
INSTRUCTIONS
Green
Safe Load
Continue Operation
Red
Overload
Do Not Continue Operation
4.3.3 Lifting and Lowering Operation – Operating the lever with the selector set to the lifting “UP” or the
lowering “DN” position, the hoist performs as follows:
Set the selector to the direction of load movement desired and ratchet the lever back and forth.
Refer to Table 4-1.
In lifting mode, the mechanical brake is engaged and supports the load on the pawls when the
lever stops.
In lowering mode, lever operation releases the mechanical brake and lowers the load, when the
lever stops, the mechanical brake is engaged and supports the load.
The brake is always engaged in the lifting and lowering modes.
If hand lever movement does not produce lifting, pull down the load side of the load chain while
ratcheting until load chain slack is removed.
4.3.4
4.3.5
Do not operate the free chain knob in lifting or lowering.
Before operating, make sure that the hoist is not in the free chain mode and the
selector is in the correct operating position.
4.3.6
Under no load conditions, in the case that the load chain does not lower against
your lowering operation, operate the grip with the load-side chain pulled lightly.
4.4 Load Limit Warning Handle (LLWH) Option
4.4.1 The LLWH is designed as a load detecting device to warn an operator that an excessive load has been
applied to the hoist.
4.4.2 The LLWH is used for applications that require a load sensing feature that actuates within 10% of its
setting. Exceeding the lever pull force limit (related to 100 to 120 % of the rated capacity) compresses
the spring and deflects the lever grip. The LLWH deflects 15 degrees and registers a visual red signal
to indicate that its setting has been reached. Refer to Table 4-2.
4.4.3
Do not lift an overload.
4.4.4
4.4.5
Disregarding the overload sign could cause bodily harm or damage to the hoist.
Do not allow dust or foreign objects to get into the LLWH.
Never adjust the signal setting to greater than 100 to 120 % of the rated capacity.
4.4.6 Excessive impact on the lever may result in a malfunctioning signal or damage to the components.
4.4.7 Using the hoist recklessly may cause the LLWH to work improperly.
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External View
Internal View
Figure 4-2 Load Limit Warning Handle
4.4.8 Load Limit Warning Handle Operation
Operate the hoist by holding the middle of the lever grip.
The following three (3) signals occur to warn of an excessive load. Refer to Figure 4-2.
- The lever grip DEFLECTS.
- The lever CLICKS.
- The signal window changes from GREEN to RED.
Stop lifting and lowering immediately when an overload is detected.
Reset the grip into its straight position (back in place) before continuing to operate the hoist.
4.5 Slip Clutch Option
4.5.1 Slip Clutch Operation
The L5 Lever Hoist with Slip Clutch is identified as is shown in Figure 4-3.
The L5 Lever Hoist with Slip Clutch is designed and manufactured to warn an operator of a
dangerous overload while preventing damage to the hoist.
A greater than rated load will activate the Slip Clutch. This will cause the lever operation to slip
preventing damage to the product.
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Figure 4-3 Slip Clutch Identifier Label
If the Slip Clutch is activated, immediately stop the lifting operation and ensure that the lever hoist
is in a no load state.
Follow the Owner‟s Manual to operate the lever hoist in a normal manner.
4.5.2 Slip Clutch Operation Precautions
Do not lift more than the rated load.
When the Slip Clutch is activated, stop operating the hoist immediately.
Failure to follow this instruction may cause injury or damage to the product. Reduce the load to
less than the rated load. Warn all the surrounding people until the Slip Clutch is released.
Do not use the hoist in a manner that frequently or repeatedly activates the
Slip Clutch.
Do not disassemble the lever hoist or change the Slip Clutch setting.
Operating the lever hoist in an unsafe manner may cause the Slip Clutch to
work improperly.
Using the lever hoist for a long period in an atmosphere of high oil content
may cause the Slip Clutch to activate with less than the rated load.
4.5.3 Slip Clutch Inspection and Maintenance
Frequent Inspection - Follow the procedure listed in the L5LB Owner‟s Manual.
Periodic Inspection and Hoist Disassembly – Consult factory before performing any inspections or
repairs involving disassembly and re-assembly of the hoist.
If the Slip Clutch is activated with the rated load, contact the factory.
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5.0 Inspection
5.1 General
5.1.1 The inspection procedure herein is based on ANSI/ASME B30.21. The following definitions are from
ANSI/ASME B30.21 and pertain to the inspection procedure below.
Designated Person – a person selected or assigned as being competent to perform the specific
duties to which he/she is assigned.
Qualified Person – a person who, by possession of a recognized degree or certificate of
professional standing, or who, by extensive knowledge, training, and experience, has successfully
demonstrated the ability to solve or resolve problems relating to the subject matter and work.
Normal Service – that distributed service which involves operation with randomly distributed loads
within the rated load limit, or uniform loads less than 65% of rated load for not more than 15% of
the time.
Heavy Service – that service which involves operation within the rated load limit which exceeds
normal service.
Severe Service – that service which involves normal or heavy service with abnormal operating
conditions.
5.2 Inspection Classification
5.2.1 Initial Inspection – prior to initial use, all new, altered, or modified hoists shall be inspected by a
designated person to ensure compliance with the applicable provisions of this manual.
5.2.2 Inspection Classification – the inspection procedure for hoists in regular service is divided into two
general classifications based upon the intervals at which inspection should be performed. The intervals
in turn are dependent upon the nature of the critical components of the hoist and the degree of their
exposure to wear, deterioration, or malfunction. The two general classifications are herein designated
as FREQUENT and PERIODIC, with respective intervals between inspections as defined below.
5.2.3 FREQUENT Inspection – visual examinations by the operator or other designated personnel with
intervals per the following criteria:
Normal service – monthly
Heavy service – weekly to monthly
Severe service – daily to weekly
Special or infrequent service – as recommended by a qualified person before and after each
occurrence.
5.2.4 PERIODIC Inspection – visual inspection by a designated person with intervals per the following
criteria:
Normal service – yearly
Heavy service – semiannually
Severe service – quarterly
Special or infrequent service – as recommended by a qualified person before the first such
occurrence and as directed by the qualified person for any subsequent occurrences.
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Table 5-1 Frequent Inspection
All functional operating mechanisms for proper operation and adjustment, maladjustment and
unusual sounds.
Hoist braking system for proper operation
Hooks and latches in accordance with ANSI/ASME B30.10
Hook latch operation
Load chain in accordance with Section 5.7
Load chain reeving for compliance with Section 3.1 and 6.4
Hoist lever for bends and cracks
Hoist support for damage
Table 5-2 Periodic Inspection
Requirements of frequent inspection.
Evidence of loose bolts, nuts, or rivets.
Evidence of worn, corroded, cracked, or distorted parts such as load blocks, suspension housing,
chain attachments, clevises, yokes, suspension bolts, shafts, gears, bearings, pins, rollers and
locking and clamping devices.
Evidence of damage to hook retaining nuts or collars and pins, and welds or rivets used to secure
the retaining members.
Evidence of damage or excessive wear of load and idler sheaves.
Evidence of worn, glazed or oil contaminated friction disks; worn pawls, cams or ratchet; corroded,
stretched, or broken pawl springs in brake mechanism.
Evidence of damage to supporting structure.
Function label on hoist for legibility.
Warning label properly attached to the hoist and legible (see Section 1.2).
End connections of load chain stopper link.
5.3 Frequent Inspection
5.3.1 Inspections should be made on a FREQUENT basis in accordance with Table 5-1, “Frequent
Inspection.” Included in these FREQUENT Inspections are observations made during operation for
any defects or damage that might appear between Periodic Inspections. Evaluation and resolution of
the results of FREQUENT Inspections shall be made by a designated person such that the hoist is
maintained in safe working condition.
5.4 Periodic Inspection
5.4.1 Inspections should be made on a PERIODIC basis in accordance with Table 5-2, “Periodic Inspection.”
Evaluation and resolution of the results of PERIODIC Inspections shall be made by a designated
person such that the hoist is maintained in safe working condition.
5.4.2 For inspections where load suspension parts of the hoist are disassembled, a load test per ANSI/ASME
B30.21 must be performed on the hoist after it is re-assembled and prior to its return to service.
22
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Criteria
Action
Functional operating
mechanisms.
Visual, Auditory
Mechanisms should be properly adjusted and
should not produce unusual sounds when operated.
Components should not be deformed, scarred or
show significant wear. Refer to Figures 5-1 and 5-2.
Repair or replace
as required.
Braking System –
Components
Visual
Brake Pawl, Pawl Shaft and Pawl Spring should not
be deformed, scarred or show significant wear.
Refer to Figures 5-1 and 5-3.
Replace
Braking System –
Friction Plate
Visual, Measure
The surface of the friction plate should be free of
grease, oil, scars, gouges and wear and have
uniform thickness. The outer thickness should not
be thinner than the inner thickness. The thickness
should not be less than the discard value listed in
Table 5-4.
Replace
Braking System –
Friction Disc
Visual
The surface of the friction plate should be free of
scars, gouges and wear.
Replace
Braking System –
Bushing
Measure
The bushing should have uniform thickness. The
“A” dimension should not be less than the discard
value listed in Table 5-5.
Replace
Braking System –
Bushing
Visual
When slightly heated, the bushing should be so
lubricated that lubricant oozes off the surface.
Soak bushing in
machine oil for one
day.
Braking System –
Ratchet Disc
Measure
The “D” dimension should not be less than the
discard value listed in Table 5-6.
Replace
5.5 Occasionally Used Hoists
5.5.1 Hoists that are used infrequently shall be inspected as follows prior to placing in service:
Hoist Idle More Than 1 Month, Less Than 1 Year: Inspect per FREQUENT Inspection criteria in
Section 5.3.
Hoist Idle More Than 1 Year: Inspect per PERIODIC Inspection criteria in Section 5.4.
5.6 Inspection Records
5.6.1 Dated inspection reports and records should be maintained at time intervals corresponding to those
that apply for the hoist‟s PERIODIC interval per Section 5.2.4. These records should be stored where
they are available to personnel involved with the inspection, maintenance, or operation of the hoist.
5.6.2 A long range chain inspection program should be established and should include records of
examination of chains removed from service so a relationship can be established between visual
observation and actual condition of the chain.
5.7 Inspection Methods and Criteria
5.7.1 This section covers the inspection of specific items. The list of items in this section is based on those
listed in ANSI/ASME B30.21 for the Frequent and Periodic Inspection.
5.7.2 Frequent Inspection - Not intended to involve disassembly of the hoist. Disassembly for further
inspection would be required if only if frequent inspection results so indicate. Disassembly and further
inspection should only be performed by a qualified person trained in the disassembly and re-assembly
of the hoist.
5.7.3 Periodic Inspection - Disassembly of the hoist is required. Disassambly should only be performed by a
qualified person trained in the disassembly and re-assembly of the hoist.
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Criteria
Action
Lifting System –
Components
Visual
Components should not be deformed, scarred or
show significant wear. Refer to Figure 5-4.
Replace
Lifting System –
Selector Pawl Spring
Measure
The “L” dimension should not be less than the listed
in Table 5-7.
Replace
Lifting System –
Brake Spring
Measure
The “L” dimension should not be less than the listed
in Table 5-8. The “A” angle degree should not be
greater than the discard value listed in Table 5-8.
Replace
Lifting System –
Free Chain Spring
Measure
The “L” dimension should not be less than the
discard value listed in Table 5-9. The “A” angle
degree should not be less than the discard value
listed in Table 5-9.
Replace
Hooks - Surface
Condition
Visual
Should be free of gouges, deep nicks, dents, weld
splatter and significant corrosion.
Replace.
Hooks - Fretting
wear
Measure
The "u" and "t" dimensions should not be less than
discard value listed in Table 5-10.
Replace.
Hooks - Stretch
Measure
The "k" dimension should not be greater than 1.05
times that measured and recorded at the time of
purchase (See Section 3.4). If recorded "k" values
are not available for hooks when new, use nominal
"k" values from Table 5-10.
Replace.
Hooks - Deformation
Visual
Should be free of twists and deformations. See
Figure 5-5.
Replace
Hooks - Bent Shank
or Neck
Visual
Shank and neck portions of hook should be free of
deformations.
Replace.
Hooks - Swivel
Visual, Function
Bearing parts and surfaces should not show
significant wear, and should be free of dirt, grime
and deformations. Hook should rotate freely with no
roughness. See Figure 5-5.
Clean/lubricate, or
replace as required.
Hooks - Idle Sheave
and Shaft (Multiple
Fall Hoist)
Visual, Function
Pockets of Idle Sheave should be free of significant
wear. Idle Sheave surfaces should be free of nicks,
gouges, dirt and grime. Bearing parts and surfaces
of Idle Sheave and Axle should not show significant
wear. Idle Sheave should rotate freely with no
roughness or significant free play.
Clean/lubricate, or
replace as required.
Hooks - Hook
Latches
Visual, Function
Latch should not be deformed. Attachment of latch
to hook should not be loose. Latch spring should
not be missing and should not be weak. Latch
movement should not be stiff - when depressed and
released latch should snap smartly to its closed
position.
Replace.
Hooks - Yoke
Assembly
Visual
Should be free of significant rust, weld splatter,
nicks, gouges. Holes should not be elongated,
fasteners should not be loose, and there should be
no gap between mating parts.
Tighten or replace
as required.
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Table 5-3 Hoist Inspection Methods and Criteria
Item
Method
Criteria
Action
Top Pin –
Deformation
Visual, Measure
The pin should be free of scars or significant
deformation. The "d" dimension should not be less
than discard value listed in Table 5-11.
Replace
Yoke – Top Pin Hole
Deformation
Visual, Measure
The "d" dimension of the top pin hole should not be
greater than the discard value listed in Table 5-12.
Replace Hook Set
Yoke – Chain Pin
Hole Deformation
Measure
The "d" dimension of the chain pin hole should not
be greater than the discard value listed in Table 5-
12.
Replace Hook Set
or yoke.
Load Chain Surface Condition
Visual
Should be free of gouges, nicks, dents, weld splatter
and corrosion. Links should not be deformed, and
should not show signs of abrasion. Surfaces where
links bear on one another should be free of
significant wear.
Replace.
Load Chain - Pitch
and Wire Diameter
Measure
The "P" dimension should not be greater than
discard value listed in Table 5-13. The "d"
dimension should not be less than discard value
listed in Table 5-13.
Replace. Inspect
Load Sheave (and
Idle Sheave for
multiple fall hoists).
Load Chain Lubrication
Visual, Auditory
Entire surface of each chain link should be coated
with lubricant and should be free of dirt and grime.
Chain should not emit cracking noise when hoisting
a load.
Clean/lubricate
(see Section 6.0).
Load Chain Reeving
Visual
Chain should be reeved properly through Load
Sheave. Refer to Section 6.4. On multiple fall
hoists chain should be installed properly and free of
twists. Refer to Section 3.1.
Reeve/Install chain
properly.
Chain Pin Deformation
Visual, Measure
The pin should be free of scars or significant
deformation. The "d" dimension should not be less
than discard value listed in Table 5-14.
Replace
Housing and
Mechanical
Components
Visual, Auditory,
Function
Hoist components including load blocks, suspension
housing, chain attachments, clevises, yokes,
suspension bolts, shafts, gears, bearings, pins and
rollers should be free of cracks, distortion, significant
wear and corrosion. Evidence of same can be
detected visually or via detection of unusual sounds
during operation.
Replace.
Bolts, Nuts and
Rivets
Visual, Check
with Proper Tool
Bolts, nuts and rivets should not be loose, deformed
or corroded.
Tighten or replace
as required.
Load Sheave
Visual
Pockets of Load Sheave should be clean and free of
significant wear.
Replace.
Warning Labels
Visual
Warning Labels should be affixed to the hoist (see
Section 1.2) and they should be legible.
Replace.
Hoist Capacity Label
Visual
The label that indicates the capacity of the hoist
should be legible and securely attached to the hoist.
Replace.
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Figure 5-1 Body Components
Figure 5-2 Other Components
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Figure 5-3 Braking System Components
Table 5-4 Friction Plate Wear Dimensions
Product Code
Thickness
inch (mm)
Standard
Discard
All
0.14 (3.5)
0.12 (3.0)
Table 5-5 Brake Bushing Wear Dimensions
Product Code
A Dimension
inch (mm)
Standard
Discard
All
0.16 (4.0)
0.12 (3.0)
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Table 5-6 Brake Ratchet Disc Wear Dimensions
Product Code
D Dimension
inch (mm)
Standard
Discard
LB008, LB010, LB015,
LB020, LB028
2.52 (64)
2.40 (61)
LB030, LB060, LB090
2.91 (74)
2.79 (71)
Figure 5-4 Lifting Components
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Table 5-7 Selector Pawl Spring Length Dimension
Product Code
L Dimension
inch (mm)
Standard
LB008, LB010, LB015,
LB020, LB028
1.46 (37)
LB030, LB060, LB090
1.65 (42)
Table 5-8 Lifting Brake Spring Dimensions
Product Code
L Dimension
Inches (mm)
A Dimension
(degrees)
Discard
Standard
Discard
Non Slip
Clutch
LB008, LB010,
LB015,LB020, LB028
1.18 (30)
30
45
LB030, LB060,
LB090
25
40
With Slip
Clutch
LB008, LB010,
LB015,LB020, LB028
1.18 (30)
30
45
LB030, LB060,
LB090
0.98 (25)
25
40
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Table 5-9 Free Chain Spring Dimensions
Product Code
L Dimension
Inches (mm)
A Dimension
(degrees)
Standard
Discard
Standard
Discard
Non Slip
Clutch
LB008, LB010
LB015, LB020,
LB028
2.60 (66)
2.32 (59)
180
165
LB030, LB060,
LB090
2.80 (71)
2.52 (64)
With Slip
Clutch
LB008, LB010
LB015LB020,
LB028
2.64 (67)
2.36 (60)
145
160
LB030, LB060,
LB090
2.95 (75)
2.68 (68)
110
125
Table 5-10 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Top: _________________________
Bottom: ______________________
Product Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Standard
Discard
Standard
Discard
LB008
1.73 (44)
0.77 (19.6)
0.73 (18.6)
0.55 (14.0)
0.52 (13.3)
LB010
2.05 (52)
0.83 (21.0)
0.79 (20.0)
0.59 (15.0)
0.56 (14.3)
LB015
2.17 (55)
1.01 (25.7)
0.96 (24.4)
0.75 (19.0)
0.71 (18.1)
LB020
2.48 (63)
1.14 (29.0)
1.09 (27.6)
0.83 (21.0)
0.79 (20.0)
LB028
2.48 (63)
1.14 (29.0)
1.09 (27.6)
0.83 (21.0)
0.79 (20.0)
LB030
2.64 (67)
1.22 (31.0)
1.16 (29.5)
0.96 (24.5)
0.92 (23.3)
LB060
3.54 (90)
1.61 (41.0)
1.54 (39.0)
1.34 (34.0)
1.27 (32.3)
LB090
4.37 (111)
2.05 (52.0)
1.95 (49.4)
1.63 (41.5)
1.55 (39.4)
* These values are nominal since the dimension is not controlled to a tolerance. The "k"
dimension should be measured when the hook is new - this becomes a reference measurement.
Subsequent measurements are compared to this reference to make determinations about hook
deformation/stretch. See Section 5.7, “Hooks - Stretch”.
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Page 31
Twisted Hook
Hook Swivel
Figure 5-5 Top and Bottom Hooks
Table 5-11 Body Top Pin Wear Dimensions
Product Code
d Dimension
inch (mm)
Standard
Discard
LB008, LB010
LB015
0.47 (12)
0.45 (11.4)
LB020, LB028
0.55 (14)
0.52 (13.3)
LB030, LB060,
LB090
0.63 (16)
0.60 (15.2)
Table 5-12 Chain Pin Hole and Top Pin Hole Wear Dimensions
Product Code
Hole Diameter (d)
Chain Pin Hole
inch (mm)
Top Pin
inch (mm)
Standard
Discard
Standard
Discard
LB008, LB010
0.28 (7.1)
0.30 (7.6)
0.48 (12.2)
0.50 (12.7)
LB015
0.35 (8.9)
0.37 (9.4)
0.48 (12.2)
0.50 12.7)
LB020, LB028
0.43 (11.0)
0.45 (11.5)
0.56 (14.2)
0.58 (14.7)
LB030
0.48 (12.3)
0.50 (12.8)
0.64 (16.2)
0.66 (16.7)
LB060, LB090
0.48 (12.3)
0.50 (12.8)
0.65 (16.4)
0.67 (16.9)
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Table 5-13 Chain Wear Dimensions
Product Code
“P” Dimension
inch (mm)
“d” Dimension
inch (mm)
Standard
Discard
Standard
Discard
LB008, LB010
3.11 (79.0)
3.20 (81.3)
0.22 (5.6)
0.20 (5.1)
LB015
3.94 (100.0)
4.05 (102.9)
0.28 (7.1)
0.25 (6.4)
LB020, LB028
4.88 (124.0)
5.02 (127.6)
0.35 (8.8)
0.31 (7.9)
LB030, LB060, LB090
5.55 (141.0)
5.71 (145.1)
0.39 (10.0)
0.35 (9.0)
Table 5-14 Chain Pin Wear Dimensions
Product Code
“d” Dimension
inch (mm)
Standard
Discard
LB008, LB010
0.27 (6.8)
0.26 (6.5)
LB015
0.34 (8.7)
0.33 (8.3)
LB020, LB028
0.43 (10.8)
0.41 (10.3)
LB030, LB060, LB090
0.48 (12.1)
0.45 (11.5)
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Figure 6-1 Chain Grease Application
6.0Maintenance and Handling
6.1 Lubrication
6.1.1 Load Chain
For longer life, the load chain should be lubricated.
The load chain lubrication should be accomplished after cleaning the load chain with an acid free
Model L4 and Model L5 chain is not interchangeable.
cleaning solution.
Apply Harrington lubricating grease (Part No. ER1BS1951) or an equivalent to industrial general
lithium grease, NLGI No. 0, to the bearing surfaces of the load chain links as indicated by the
shaded areas in Figure 6-1. Also apply the grease to the areas of the load chain (shaded areas in
Figure 6-1) that contact the load sheave. Insure that the grease is applied to the contact areas in
the load sheave pockets.
Machine or gear oil (grade ISO VG 46 or 68 oil or equivalent) may be used as an alternative
lubricant but must be applied more frequently.
The chain should be lubricated every 3 months (more frequently for heavier usage or severe
conditions).
For dusty environments, it is acceptable to substitute a dry lubricant.
6.1.2 Hooks and Suspension Components:
Hooks – Bearings should be cleaned and lubricated at least once per year for normal usage.
Clean and lubricate more frequently for heavier usage or severe conditions.
Hook Yokes and Latches – Lubricate the hook yokes and hook latches at least twice per year for
normal usage; more frequently for heavier usage or severe conditions.
Suspension Pins - Lubricate the chain pin and the top pin at least twice per year for normal usage;
more frequently for heavier usage or severe conditions.
33
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Table 6-1 Tools Required for Hoist Disassembly
No.
Tool
Operation
1
Snap ring pliers
Opening a snap ring
2
Socket wrenches: 12, 14 mm
Slotted nuts
3
Hex keys: 4, 5, 10, 12 mm
Socket head cap screws
4
Wrenches: 10, 12, 13, 14, 17 mm
Bolts and nuts
5
Phillips screwdriver
Machine screws
6
Pliers
Split pins
7
Soft-face (plastic) hammer
6.2 Disassembly, Assembly and Adjustment
6.2.1
1) Perform proper disassembly or assembly in accordance with this manual.
2) The hoist utilizes dry friction plates; they are not to be lubricated.
3) Do not extend the load chain.
4) Remove old grease on the disassembled parts.
5) Replace components with Harrington Hoist approved parts.
6) To reassemble, apply new grease, and use a new split pin and snap ring.
Note: The following symbols in this manual indicate the recommended lubricants.
6.2.2 Tools – The following tools are required to disassemble/reassemble the hoist.
G1: NLGI No. 2
G2: Turbine Oil
G3: NLGI No. 1
6.3 Hoist Disassembly
Proceed as follows:
6.3.1 Free Chain Knob
1) Pull out (50) Split Pin and remove (49) Slotted Nut.
1) Remove (31) Acorn nuts and (32) Spring Lock Washers, which attaches (29) Brake Cover
assembly to (10) Frame A assembly.
2) While holding (37) Lever assembly horizontally by hand, turn (33) Female Thread
counterclockwise and remove the lever assembly (29) Brake Cover assembly from the hoist.
3) Remove (42) Hex Cap Screw and (30) Flange Nut, and separate (37) Lever assembly and (29)
Brake cover assembly.
4) Remove (33) Female Thread from (29) Brake cover assembly.
5) Remove (34) Select Pawl, (35) Spring Shaft and (36) Selector-Pawl Spring from (37) Lever
assembly.
6.3.3 Brake
1) Remove the parts from (16) Pinion in the following order, (26) Friction Plate (one piece), (27)
Ratchet Disc, (28) Bushing, (26) Friction Plate (1 piece) and (25) Friction Disc.
2) Remove (24) Snap Ring from the pawl shaft with snap ring pliers, and remove (22) Pawl and (23)
Pawl spring.
6.3.4 Gears
1) Remove (14) Acorn Nut and (15) Spring Lock Washer, and detach (13) Gear Case assembly.
2) Remove (17) Gear #2 and (16) Pinion. On LB028 to LB090 hoists remove (18) Load Gear.
3) Pull out (3) Top Pin and remove (1) Top Hook set.
3) For LB008 to LB030 hoists remove (9) Split Pin, (8) Slotted Nut and (7) Chain Pin from (4) Bottom
Hook Set, and remove (52) Load chain.
4) For LB060 and LB090 hoists remove (23) Split Pin, (22) Slotted Nut and (21) Chain Pin from (10)
Bottom or (1) Top Hook Set. Remove (15) Lever Nuts and (14) Bolts form (13) Bottom or (4) Top
Yoke Assembly then remove (7) and (15) Idle Sheeve(s).
6.4 Hoist Assembly
6.4.1
Inspect and replace any worn or damaged parts per Table 5-3.
Secure all nuts, bolts and split pins firmly.
Replace all split pins and retaining rings.
35
Page 36
Select lever
Spring holder
Lever Upper side
N
DN
UP
Select lever
a
G1
{
34
36
35
G1
G1
Hex part
Pull fully
Hold firmly
Figure 6-1 Internal Lever Assembly
Figure 6-2 Lever Assembly
6.4.2 Lever
Refer to Figure 6-1, proceed as follows:
1) Set the Selector Lever on the (37) lever assembly to the „N‟ position.
2) With the Selector Lever pulled in the „a‟ direction, as shown in the left picture, insert the hex part of
the Selector Lever into (34) Select pawl.
3) Apply (G1) grease lightly to the pawl of (34) Select Pawl and to the top of (35) Spring Shaft as
shown in Figure 6-1.
4) Insert (35) Spring Shaft into (36) Select-Pawl spring and attach them into the Spring Holder.
Refer to Figure 6-2, proceed as follows.
1)
2)
Do not apply oil to the friction side of the Female Thread.
Clean the friction side of the Female Thread.
3) Apply (G3) grease lightly to the thread of (33) Female Thread.
4) Place (33) Female Thread, friction side first into the (29) Brake Cover assembly.
5) Install (37) Lever assembly onto (29) Brake Cover Assembly and secure with (42) Hex Cap Screw
and (30) Flange Nuts.
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Figure 6-3 Applying Glue to Lever
Figure 6-4 Fitting Grip onto Lever
6.4.3 Lever Grip
1)
Read ALL instructions below BEFORE applying glue.
2) Remove dirt, water, oil and rust from the area of the Lever where the glue will be applied for the
new grip. Note: Glue is included with the replacement Lever Grip.
3) Make a quick and even application of the glue on the four sides of the Lever as shown in Figure 6-
3. (38) Grip must be installed within 10 seconds after applying the glue to the Lever.
4) Refer to Figure 6-4 and place (38) Grip on Lever with its inside boss aligned with the boss hole in
the Lever. Make sure boss of (38) Grip is completely seated into the boss hole of the lever.
5) Firmly install (39) Binding Screw through the Grip and Lever Assembly.
37
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Figure 6-5 Load Sheave Attachment to Frame A Assy
Figure 6-6 Load Chain Reeving Direction
6.4.4 Load Sheave and Chain Assembly
1) For LB008 to LB030 hoists attach (4) Bottom Hook set to (52) Load chain with (8) Slotted Nut and
(7) Split Pin.
2) For LB060 and LB090 hoists apply (G1) grease the bearing surface of the (17) Shaft Assembly
and (16) (17) Idle Sheave. Install the shaft and sheave into the (13) Bottom or (4) Top Yoke
assembly and secure the yokes with (14) bolts and (15) Lever Nuts.
3) Apply (G3) grease to the inner parts of the bearing hole of (10) Frame A Assembly and (19) Load
Sheave as shown in Figure 6-5.
4) Attach (19) Load Sheave to (10) Frame A Assembly on Stay Bolt side with the gear or spline
oriented as shown in Figure 6-5.
5) Place the (52) Load chain on (19) Load Sheave and install (20) Chain Guides and (21) Stripper.
Refer to Figure 6-6.
6)
Orient the load chain with the (53) Chain stopper link parallel to the frame and
welds to the outside of the Load Sheave.
38
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Figure 6-7 Frame B
Figure 6-8 Top Hook Attachment
7) Apply (G3) grease to the bearing part of (12) Frame B. Refer to Figure 6-7.
8) Install (12) Frame B onto (10) Frame A Stay Bolts. Make sure to align the top flat parts of the both
frames.
6.4.5 Top Hook
Install the (1) Top hook set between (10) Frame A assembly and (12) Frame B then Insert (3) Top
pin from the side of (12) Frame B to fasten (1) Top hook set. Refer to Figure 6-8.
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Figure 6-9 Gears
Table 6-2 Amount of Grease to Apply to the Gears by Hoist Code
Hoist Code
Grease (Approximate)
(Grams)
LB008, LB010
20
LB015, LB028
30
LB030, LB060, LB090
60
6.4.6 Gears
1) For LB020 to LB090 hoists, attach (18) Load Gear to the serrated part of (19) Load Sheave. If
necessary use a plastic or rubber hammer to make the load gear is fully seated on the Load
Sheave.
2) Insert (16) Pinion into (19) Load Sheave and install (17) Gear #2 as shown in Figure 6-9. Gear #2
must be timed with the “0” marks as shown for the gears to rotate freely.
3) Apply (G1) grease to (16) Pinion, (17) Gear #2 and (18) Load Gear. Refer to Table 6-2 for the
correct amount of grease.
4) Install (13) Gear Case assembly over the gears and fix it firmly to the Stay Bolts with (14) Acorn
Nut and 15) Spring Lock Washer. Make sure the top flat part of the gear case aligns with the flat
on (12) Frame B.
40
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Figure 6-10 Pawl Shaft and Pawl
Figure 6-11 Disc, Plate, Bushing Order
6.4.7 Brake
1) Lightly apply (G2) grease to the Pawl Shaft and (22) Pawl. Refer to Figure 6-10.
2)
friction surfaces of the brake.
3) Fasten two sets of (23) Pawl Spring and (22) Pawl with (24) Snap Ring.
4) While holding two (22) pawls outward, install (25) Friction Disc, (26) Friction Plate, (28) Bushing,
(27) Ratchet Disc and (26) Friction Plate properly in this order. Refer to Figure 6-11.
Use a minimal amount of grease on (22) Pawl to avoid getting grease on the
5)
6)
7)
8)
in turbine oil for a day and wipe off excess.
Make sure that the Pawl Spring fits into the pawl.
Make sure that the pawl comes into good contact with the Ratchet Disc.
The Friction Plates are dry (not lubricated). Do not apply oil to them.
Ensure sure that (28) Bushing is sufficiently oiled. If it is not, soak the Bushing
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Figure 6-12 Cam Guide
6.4.8 Hoist Lever and Body
1) Attach the Lever assembled in Section 6.4.2 to the previously assembled Brake. Fit (29) Brake
Cover assembly and (10) Frame A assembly by screwing (33) Female Thread of the Lever
assembly clockwise to the thread of (16) Pinion until it makes a clicking sound. Make sure the flat
part of the Brake Cover aligns with the flat on Frame A.
2) Fasten (29) Brake Cover assembly firmly to the Stay Bolts with (14) Acorn Nuts and (15) Spring
Lock Washer.
3)
To eliminate a clearance in the Brake section, perform the following
procedures before moving onto the next step.
A) Set the Selector Lever to „N‟ position.
B) Turn (33) Female Thread clockwise to tighten the Brake lightly with (52) Load chain at the
hook side held by hand firmly without (19) Load Sheave‟s rotation.
C) The hoist will make “clicking” sounds if the chain is not being held sufficiently. The clearance
will be reduced while the hoist is “clicking”. After tightening, make sure that the Female Thread
will not rotate counterclockwise on the (16) Pinion.
4) To attach (44) Cam Guide to (16) Pinion, aligning the boss of the Guide slightly to the right of the
middle of (33) Female Thread‟s boss as shown in Figure 6-12.
5) Apply (G3) grease lightly to the side of (44) Cam Guide.
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Figure 6-13 Cam Guide and Brake Spring
Figure 6-14 Free Chain Knob and Female Thread Assembly
6.4.9 Free Chain Knob
1) Set (43) Brake Spring (silver color) into the slot of the back of (45) Free Chain Knob assembly.
Refer to Figure 6-13. As indicated in Figure 6-13, set the end of the spring next to the rib of the
knob.
2) Fit the opposite end of (43) Brake Spring next to the boss of the Female Thread. Refer to Figure 6-14.
3) While holding the load chain on the hook side firmly to prevent (19) Load Sheave from rotating,
turn (45) Free Chain Knob assembly 120° clockwise while pressing it lightly on (33) Female
Thread. Refer to Figure 6-15. As the Free Chain Knob turns, the cam parts of (44) Cam Guide fit
into the slots of the Free Chain Knob.
4) Rotate the Selector Lever to the Up or Down position to temporarily retain the (45) Free Knob.
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Figure 6-15 Brake Spring and Female Thread Assembly
Figure 6-16 Free Chain Knob Assembly
5) Hook the outward-projecting end of (47) Free Chain Spring onto the slot at the back of (48) Spring
Holder, and hook the other end (inward-projecting) of the Spring onto the slot of (45) Free Chain
Knob assembly. Refer to Figure 6-16.
6) Turn (48) Spring Holder 120° counterclockwise while lightly pressing it toward the (45) Free
Chain Knob assembly. Install the spring holder onto the Pinion serration and hold it in place. Refer
to Figure 6-17.
7) While holding the (48) Spring Holder in place, fasten it in place with the (49) Slotted Nut and (50)
Split pin.
8) Set the Selector Lever to the „N‟ position and pull the Free Chain Knob into the free chaining mode.
Operate the hoist in the free chain mode to ensure correct performance.
9)
If the free chaining can not be performed, the hoist has been assembled
incorrectly. Correctly reassemble the hoist in accordance with this procedure.
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Figure 6-17 Free Chain Knob and Spring Holder
6.4.10 Preoperational Checks
1) Make sure all nuts, bolts and split pins are sufficiently fastened.
2) Make sure all components have been installed correctly.
3)
hoist.
4) Make sure that the hoist operates properly under no load condition before lifting a load.
5) Perform a load test at 125% of rated load in accordance with ASME B30.21.
6) Record of load test and maintenance performed should be placed on file with the inspection
records referenced in section 5.6.1.
7) During lifting and lowering operations check the following.
There should be no irregular clicking or abnormal sounds when lifting.
Lever pull should not be difficult in lifting mode.
The hoist brake should not slip.
6.5 Storage
6.5.1 The storage location should be clean and dry.
6.5.2 The hoist should be clean and dry. The load chain and all other exposed metal should be well
lubricated.
6.6 Outdoor Installation
6.6.1 For hoist installations that are outdoors, the hoist should be covered or brought inside when not in use.
After assembly, perform the following preoperational checks before operating
6.6.2 Possibility of corrosion on components of the hoist increases for installations where salt air and high
humidity are present. Make frequent and regular inspections of the hoist‟s condition and operation.
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Read and comply with instructions in this manual and use the hoist properly.
Checking the sounds from the hoist in operation is a critical inspection. Note hoist sounds during operation.
If a defect is found in the hoist, stop using it immediately and check the cause of the defect.
Only Trained and competent personnel should inspect and repair the hoist.
Table 7-1 Troubleshooting Guide
Note on proper operation:
When lifting, the lever should make clicking sounds when moving the lever forward and backward.
When lowering, the lever should make clicking sounds only when moving the lever backward (not forward).
Symptom
Cause
Remedy
Hoist will not lift –
Slight clicking
Improper assembly of ratchet disc, disc
installed backwards and making incorrect
contact with the pawl.
Reassemble the pawl and ratchet disc
properly. Ensure that clicking sounds are
heard before reuse.
Hoist will not lift –
Not Clicking
Pawl not engaging ratchet disc:
Dirt or corrosion between pawl and pawl
shaft.
Clean and lubricate pawl and pawl shaft.
Pawl shaft
Pawl
Faulty pawl spring
Replace pawl spring
Improper selector lever fit
Missing selector pawl spring
Assembled incorrectly (wrong direction)
Reassemble properly and ensure selector
lever clicks before reuse.
Lever upper side
Spring holder
N
DN
UP
Select lever
Select pawl
Spring shaft
Select-pawl spring
Select lever
Loose selector pawl spring
Perform hoist maintenance.
7.0 Troubleshooting
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Table 7-1 Troubleshooting Guide
Symptom
Cause
Remedy
Hoist will not lift –
Lever will not operate
Gear #2 improperly timed
Reassemble gears properly and ensure
smooth operation before reuse.
Ensure the „0‟ marks of
gear #2 are aligned properly, as shown.
PinionGear #2
'0' Mark
Hoist with Slip Clutch
Hoist will not lift –
Lever will operate but
load will not move.
Slip Clutch activated.
Reduce load to less than rated capacity.
Hoist with Slip Clutch
Hoist will not lift under
rated capacity.
Slip Clutch malfunction. Due to frequently
operating hoist with greater than rated load.
Replace friction clutch.
Do not frequently operate hoist with greater
than rated load.
Hoist will lift
intermittently –
Slight or irregular
clicking
Poor pawl movement caused by faulty pawl
spring. The spring is loose or damaged.
Perform maintenance and/or repair.
Mis-assembly of pawl spring
Reassemble it properly and ensure to check
click sound of the pawl before reuse.
During operation, hoist
idles or load drifts
Poor contact of load sheave and load chain
caused by improper chain-reeving (see
picture)
Frame A
Chain guide
To bottom
hook
Load sheave
Chain stopper link
Load chain
Reassemble properly and ensure proper
lifting before reuse.
To bottom
hook
Chain guide
Load sheave
Chain stopper link
Hoist will not lift without
load
Mis-assembly of brake spring
Insufficient angle to set the spring will cause
a poor braking.
Brake spring
Slot for spring
Back of free chain
knob assembly
Slot for cam guide
Reassemble properly.
Turn the free chain
knob 120° clockwise and set the brake
spring.
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Table 7-1 Troubleshooting Guide
Symptom
Cause
Remedy
Hoist will not lift all the
way (multiple fall
hoists)
Capsized hook
Reset the capsized hook.
Twisted Chain
Capsized Hook and Chain
Double Fall Models
Improper braking may cause improper load lowering. The hoist utilizes dry friction discs, do not
apply oil to friction surfaces.
Symptom
Cause
Remedy
Load will not go down
Over tightened brake
The hoist left under load for a long period
Shock loaded during operation
Set the selector lever to „DN‟ position and
reset the brake by pulling harder on the
lever.
Brake rusted tight
Replace the rusty components and perform
hoist maintenance.
Load drifts or slips
when lowering
A foreign object between friction surfaces.
Remove the object and clean the surfaces.
Replace if the friction surface is scarred.
Brake slip caused by significant rust
Replace the rusty component and perform
hoist maintenance.
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Table 7-1 Troubleshooting Guide
Symptom
Cause
Remedy
Mis-assembly of friction plates, i.e. friction
plates missing or at one side as shown.
Reassemble properly as shown and ensure
hoist functions properly before reuse.
Cracked friction plate caused by overload
Replace the friction plate and use the hoist
properly within rated capacity.
Friction plate wear caused by very frequent
and long term use.
Perform hoist maintenance.
Load drifts or slips
when lowering,
continued
Mis-assembly of female thread and cam
guide
Reassemble Female Thread and Cam
Guide properly.
Attaching cam guide without tightening
female thread may cause an un-tightened
brake.
Secure the female
thread firmly before attaching cam guide.
Free chain knob does
not move in and out
Damaged or deformed friction plate
Perform hoist maintenance.
Hoist will not free
wheel
Load chain pulled to hard and brake
engaged
Pull the load chain with less force
Mis-assembly of free chain spring
Chain Spring twisted at excessive angle
See the symptom of “Hoist will not lift without
load.”
Load drifts or slips
when selector lever is
set in free chain mode
Mis-assembly of free chain spring
Poorly tightened brake caused by insufficient
twist angle.
See the symptom of “Hoist will not lift without
load.”
Mid of female
thread's jog
Mid of cam guide's jog
Some more rightfrom mid of femalethread jog
Jog of female thread
Jog of cam guide
To female thread
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Table 7-1 Troubleshooting Guide
Symptom
Cause
Remedy
Hard to reset the hoist
out of free chain mode
Mis-assembly of free chain spring
Insufficient twist angle
Reassemble properly.
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8.0 Warranty
All products sold by Harrington Hoists, Inc. are warranted to be free from defects in material and
workmanship from date of shipment by Harrington for the following periods:
Manual Hoists, Trolleys, & Beam Clamps – 2 years
NER2/ER2 Hoists Enhanced Features Models – 3 Years
(N)ER030L(D), All Other Electric and Air Hoists, Trolleys, Crane Components – 1 year
Spare / Replacement Parts – 1 year
NER2/ER2 “The Guardian” Smart Brake – 10 years
The product must be used in accordance with manufacturer‟s recommendations and must not
have been subject to abuse, lack of maintenance, misuse, negligence, or unauthorized repairs or
alterations.
Should any defect in material or workmanship occur during the above time period in any
product, as determined by Harrington Hoist‟s inspection of the product, Harrington Hoists, Inc.
agrees, at its discretion, either to replace (not including installation) or repair the part or product free
of charge and deliver said item F.O.B. Harrington Hoists, Inc. place of business to customer.
Customer must obtain a Return Goods Authorization as directed by Harrington or Harrington‟s
published repair center prior to shipping product for warranty evaluation. An explanation of the
complaint must accompany the product. Product must be returned freight prepaid. Upon repair,
the product will be covered for the remainder of the original warranty period. Replacement parts
installed after the original warranty period will only be eligible for replacement (not including
installation) for a period of one year from the installation date. If it is determined there is no defect,
or that the defect resulted from causes not within the scope of Harrington‟s warranty, the customer
will be responsible for the costs of returning the product.
Harrington Hoists, Inc. disclaims any and all other warranties of any kind expressed or implied
as to the product‟s merchantability or fitness for a particular application. Harrington will not be liable
for death, injuries to persons or property or for incidental, contingent, special or consequential
damages, loss or expense arising in connection with the use or inability whatever, regardless of
whether damage, loss or expense results from any act or failure to act by Harrington, whether
negligent or willful, or from any other reason.
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This Page Intentionally Left Blank
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9.0 Parts List
Figure 9-1 LB Nameplate
Figure 9-2 LB with Slip Clutch Nameplate
When ordering Parts, please provide the Hoist code number, lot number and serial number located on the Hoist
nameplate (see Figure 9-1 below).
Reminder: Per Sections 1.1 and 3.4.4 to aid in ordering parts and product support, record the hoist Code, Lot and Serial
Number in the space provided on the cover of this manual.
The parts list is arranged into the following sections:
Section Page
9.1 3/4 to 3 Ton Parts………………….…………………………………………………...……….………. 54
9.2 Additional 6 and 9 Ton Parts…………………………………………………………………………… 56